Newton and .NET?

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Newton and .NET?

Postby Leadwerks » Fri Jan 16, 2009 7:50 pm

Newton's callbacks all use the CDECL convention. I was wondering if this caused any problems with .NET, because as I understand it, .NET does not support the CDECL convention. Any information on this? I have run into a similar issue with my own engine, and I'd rather not switch all the callbacks to _stdcall.
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Re: Newton and .NET?

Postby Julio Jerez » Sat Jan 17, 2009 12:29 am

newton uses CDECL, you can see it in the header

Code: Select all
#ifdef __cplusplus
extern "C" {

forces a pure c interface regaless what option you set on in your compiler, which I am sure all laguage support.
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Re: Newton and .NET?

Postby martinsm » Sat Jan 17, 2009 8:58 am

.NET supports any of native callback conventions (cdecl, stdcall, fastcall, thiscall). See here: ... ntion.aspx
Basically you should write following code for umanaged function pointers:
Code: Select all
[UnmanagedFunctionPointer(CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
public delegate void NewtonBodyDestructor(IntPtr body);

[DllImport("newton.dll", CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
public static extern void NewtonBodySetDestructorCallback(IntPtr bodyPtr, NewtonBodyDestructor callback);
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